Columbia Treadlite 22 PackThe Columbia Treadlite 22 Pack comes with the advanced repellency feature Omni-Shield which keeps its contents dry, while the backdraft ventilation of the back panel utilizes the directional foam conduits, allowing the hot air to rise and replacing it with cooler air to keep your back really nice and dry. The straps of the backpack are made with two layers of extra-light Techlite foam, 10mm-thick Velocity L.O.A.D., one that goes next to the body which is softer and the other one on the outside that is stiffer and more durable. The Techlite is molded around amazingly strong mesh inserts for remarkable breathability and sheer strength. The Columbia Treadlite 22 Pack s Silverback reflective lining features a bright interior so you can find things with ease. This pack is great for either gender, it has organization pockets to keep all your small items organized. It s light and yet tough, convenient and easy to use. This pack will be a great companion, for whatever wild adventure you feel like pursuing.